It’s not just computing power - you don’t always want your device burning massive amounts of battery.

FTFY

Yeah… One of my great great grandmothers, nobody was ever allowed to know how old she was while she was alive. It was this weird mystery.

Turns out if you knew her age you could easily count backwards and work out that when she got married she was 13 years old and about four months pregnant.

When my phone’s barcode reader app sees a web link, it fetches the page’s title to display next to the actual link. So it is going to that web server and fetching resources by itself. Even though it isn’t actually rendering the page and running javascript, it might be exploitable.

This image from further down the page is funnier here.